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Water Holding Capacity Of Soil. The water-holding capacity WHC is defined as the amount of water held in the soil after the excessgravitational water has drained away and after the rate of downward movement of water hasmaterially ceased. Science Experiments for school students. The water holding capacity of a soil is calculated by summing the capacity of each layer in the root zone. Relationship with water holding capacity along altitudinal gradient for cultivated soils of South Sikkim.
Field capacity is the point where the soil water holding capacity has reached its maximum for the entire field. Stage of field capacity is attained in the field after 24 to 72 hours of saturation. The maximum amount of water that a given soil can retain is called field capacity whereas a soil so dry that plants cannot liberate the remaining moisture from the soil particles is said to be at wilting point. The organic carbon content varied from 122 to 345 per cent with a mean. This can be used to replace cotton in bandages. Because loam provides proper capillary spaces and good aeration to hold water it has a mixture of sand clay and decomposed organic material known as humus.
WB7Y and DM7Y represented the biochar of wood sawdust and dairy manure pyrolyzed at 700 C added to.
The AD will vary with soil type crop type stage of crop growth and effective rooting depth of the crop. Field capacity is the point where the soil water holding capacity has reached its maximum for the entire field11 Nov 2011. It is used quite often. The AD will vary with soil type crop type stage of crop growth and effective rooting depth of the crop. Thisis the upper limit of plant-available soil moisture. Sphagnum has high absorptive power with antiseptic property.